Flush toilet apparatus

Abstract

The purpose of the present invention is to provide a flush toilet device capable of further saving water while maintaining dirt discharge performance by means of appropriate toilet cleaning at each time of toilet cleaning. The present invention is a siphon jet-type flush toilet device provided with: a bowl part; a drainage elbow pipeline; a jet spout; a pressure pump; a line sensor that detects an object falling into the bowl; and a control unit that determines whether the object is a solid dirt or a floating dirt, the control unit controls the pressure pump such that a first jet discharge is performed from the jet discharge port at a first flow rate and then a second jet discharge is performed at a second flow rate smaller than the first flow rate, and when the control unit determines that the object is a floating dirt, the second jet discharge is performed in the first jet discharge. The booster pump is controlled so that the water discharge time is shorter than when the object is determined to be a solid dirt.

Description

Technical Field

[0001] This invention relates to a flushing toilet device, and more particularly to a siphon-jet type flushing toilet device. Background Technology

[0002] When cleaning the toilet, the user manually selects a thorough cleaning, a light cleaning, or a water-saving light cleaning (using less water than the light cleaning). The amount of water used in each cleaning cycle is pre-calculated based on the types and amounts of waste, and is set to flush out all waste. This water volume is always fixed and cannot be changed based on the state of the waste for each cleaning cycle. Therefore, for example, if the amount of waste is less than expected, although the waste can be flushed, more water than necessary may be used.

[0003] As is well known from the past, flushing toilet devices, such as those described in Patent Document 1, adjust the amount of water used during a small flush based on whether toilet paper is used. In such a flushing toilet device, if toilet paper is not used during a small flush, the amount of water used can be reduced.

[0004] Furthermore, flushing toilet devices for determining the type and amount of waste, as described in Patent Document 2, are already well known. In such flushing toilet devices, waste falling into the basin or waste in the process of falling is photographed, and the photographed images are analyzed to determine the type and amount of waste.

[0005] Patent documents Patent Document 1: Japanese Patent Application Publication No. 2019-526003 Patent Document 2: Japanese Patent Application Publication No. 2021-050983 Summary of the Invention

[0006] However, although the flushing toilet device described in Patent Document 1 can change the flushing water volume according to whether toilet paper is used during small cleaning, it does not constitute the most appropriate toilet cleaning for large cleaning corresponding to the type and amount of dirt. Furthermore, although the flushing toilet device described in Patent Document 2 determines the type and amount of waste, it does not constitute the most appropriate toilet cleaning corresponding to the type and amount of waste. Therefore, in the flushing toilet devices described in Patent Documents 1 and 2, there is a problem that, for example, more flushing water than necessary is used when the amount of waste is less than intended.

[0007] Therefore, the present invention was made to solve the above-mentioned existing problems, and its object is to provide a flushing toilet device that can achieve further water conservation while maintaining the performance of waste discharge through proper toilet cleaning during each toilet cleaning.

[0008] To achieve the above objectives, the present invention provides a flushing toilet device, which is a siphon-jet type flushing toilet device, comprising: a basin having a waste receiving surface for receiving waste and an inner edge formed above the waste receiving surface; a drain bend pipe connected to the lower part of the basin and discharging waste; a jet nozzle disposed below the basin, discharging cleaning water into the inlet of the drain bend pipe; a cleaning water supply device supplying cleaning water to the jet nozzle; a detection unit for detecting objects falling into the basin; and a control unit for determining, based on the detection result of the detection unit, that the object is... The system determines whether the object is solid or floating debris and controls the cleaning water supply device accordingly. The control unit is configured to control the cleaning water supply device by first jetting water from the jet nozzle at a first flow rate to generate a siphon effect, and then second jetting water at a second flow rate less than the first flow rate. Furthermore, when the object is determined to be floating debris, the control unit controls the cleaning water supply device by making the jetting time shorter during the first jetting process compared to when the object is determined to be solid debris.

[0009] In this invention, the control unit is configured to control the water supply device by first jetting water at a first flow rate to generate a siphon effect from the jet nozzle, and then second jetting water at a second flow rate less than the first flow rate. Therefore, a siphon effect is quickly generated by the first jetting water, and the waste is flushed away by the second jetting water. Furthermore, since the control unit is configured to control the water supply device by making the jetting time shorter in the first jetting water when the target object is determined to be floating waste compared to when the target object is determined to be solid waste, the jetting time of the first jetting water, which has a smaller impact on the removal of floating waste, can be shortened, thus reducing the amount of water used for cleaning. Therefore, by performing appropriate toilet cleaning each time, further water conservation can be achieved while maintaining waste removal performance.

[0010] Preferably, in this invention, the control unit is configured to determine the amount of the object based on the detection result of the detection unit, and control the cleaning water supply device based on the determination result. When the object is determined to be floating debris, the control unit controls the cleaning water supply device in a manner that the water discharge time is approximately constant regardless of the amount of the object during the first water jet discharge. In this invention, the control unit is configured to determine the amount of object based on the detection result of the detection unit and control the cleaning water supply device based on the determination result. When the object is determined to be floating debris, the control unit controls the cleaning water supply device in a manner that keeps the water discharge time approximately constant regardless of the amount of object. Therefore, the water discharge time of the first jet of water, which has a relatively small impact on the discharge of floating debris, can be kept approximately constant, thereby reducing the amount of cleaning water.

[0011] Furthermore, in this invention, the control unit is preferably configured such that, when the object is determined to be floating debris, the water supply device is controlled in the second water jet in such a way that the greater the amount of object, the longer the water jetting time. In this invention, the control unit is configured such that when the object is determined to be floating debris, the water supply device is controlled in the second jet of water discharge in such a way that the greater the amount of object, the longer the water discharge time. Therefore, when there is a large amount of floating debris, the second jet of water discharge can reliably flush away the floating debris stuck in the drain bend pipe.

[0012] Preferably, in this invention, the control unit is configured to determine the amount of the object based on the detection result of the detection unit, and to control the cleaning water supply device based on the determination result. The control unit is configured to control the cleaning water supply device in a manner that the greater the amount of the object, the longer the water discharge time is in the first spray water when the object is determined to be solid dirt. In this invention, the control unit is configured to determine the amount of object based on the detection result of the detection unit and control the cleaning water supply device based on the determination result. When the object is determined to be solid dirt, the control unit controls the cleaning water supply device in the first jet of water discharge in such a way that the more object there is, the longer the water discharge time is. Therefore, the duration of the siphon effect can be extended and solid dirt can be reliably discharged.

[0013] Furthermore, in this invention, the control unit is preferably configured such that, when the object is determined to be solid dirt, the water supply device is controlled in the second water jet in such a way that the water jetting time is approximately constant regardless of the amount of the object. In this invention, the control unit is configured such that when the object is determined to be solid dirt, the water supply device is controlled in the second jet water discharge in such a way that the water discharge time is approximately constant regardless of the amount of object. Therefore, the water discharge time of the second jet water discharge, which has a relatively small impact on the discharge of solid dirt, can be kept approximately constant, thereby reducing the amount of water used for cleaning.

[0014] Preferably, in this invention, the control unit is configured to determine, based on the detection result of the detection unit, whether the object is solid dirt, floating dirt, or an object other than dirt, and to control the cleaning water supply device based on the determination result. The control unit is configured to control the cleaning water supply device in a manner that, when the object is determined to be an object other than dirt, the second water jet is sprayed in a way that the spraying time is shorter than when the object is solid dirt or floating dirt. In this invention, the control unit is configured to determine, based on the detection result of the detection unit, whether the object is solid dirt, floating dirt, or an object other than dirt, and to control the cleaning water supply device based on the determination result. When the object is determined to be an object other than dirt, the control unit controls the cleaning water supply device in a way that makes the water discharge time shorter than when the object is solid dirt or floating dirt. Therefore, the water discharge time of the second jet, which has a smaller impact on the discharge of objects other than dirt, can be shortened, thereby reducing the amount of cleaning water.

[0015] To achieve the above objectives, the present invention provides a flushing toilet device, which is a siphon-jet type flushing toilet device, comprising: a basin having a waste receiving surface for receiving waste and an inner edge formed above the waste receiving surface; a drain bend pipe connected to the lower part of the basin and discharging waste; a jet nozzle disposed below the basin, discharging cleaning water into the inlet of the drain bend pipe; a cleaning water supply device supplying cleaning water to the jet nozzle; a detection unit for detecting objects falling into the basin; and a control unit for determining, based on the detection result of the detection unit, that the object is... The system determines whether the object is solid or floating debris and controls the cleaning water supply device accordingly. The control unit is configured to control the cleaning water supply device by first jetting water from the jet nozzle at a first flow rate to generate a siphon effect, and then by second jetting water at a second flow rate less than the first flow rate. Furthermore, when the object is determined to be floating debris, the control unit controls the cleaning water supply device by making the instantaneous flow rate during the first jetting water larger than when the object is determined to be solid debris.

[0016] In this invention, the control unit is configured to control the water supply device by first jetting water from the jet nozzle at a first flow rate to generate a siphon effect, and then second jetting water at a second flow rate less than the first flow rate. Therefore, a siphon effect is quickly generated by the first jetting water, and the waste is flushed away by the second jetting water. Furthermore, since the control unit is configured to control the water supply device by making the instantaneous flow rate of the first jetting water larger than when the waste is determined to be solid waste, a siphon effect can be quickly generated to expel the floating waste. Thus, by performing appropriate toilet cleaning each time, water conservation can be further achieved while maintaining waste removal performance.

[0017] In this invention, the control unit is preferably configured such that, when the object is determined to be floating debris, the cleaning water supply device is controlled in a manner that makes the instantaneous flow rate in the second jet water greater than the instantaneous flow rate when the object is determined to be solid debris. In this invention, the control unit is configured such that when the object is determined to be floating debris, the instantaneous flow rate of the second jet of water is controlled to be greater than that when the object is determined to be solid debris. Therefore, the second jet of water can reliably flush away the floating debris trapped in the drain bend pipe.

[0018] Furthermore, in this invention, it is preferable that the control unit is configured to determine, based on the detection result of the detection unit, whether the object is solid dirt, floating dirt, or an object other than dirt, and to control the cleaning water supply device based on the determination result. The control unit is configured to control the cleaning water supply device in a manner that, when the object is determined to be an object other than dirt, the instantaneous flow rate in the second jet water is smaller than the instantaneous flow rate when the object is determined to be floating dirt. In this invention, the control unit is configured to determine whether the object is solid dirt, floating dirt, or an object other than dirt based on the detection result of the detection unit, and to control the cleaning water supply device based on the determination result. When the object is determined to be an object other than dirt, the control unit controls the cleaning water supply device in a way that the instantaneous flow rate in the second jet water is smaller than when the object is determined to be floating dirt. Therefore, the instantaneous flow rate of the second jet water, which has a smaller impact on the discharge of objects other than dirt, can be reduced, thereby reducing the amount of cleaning water.

[0019] To achieve the above objectives, the present invention provides a flushing toilet device, which is a siphon-jet type flushing toilet device, comprising: a basin having a waste receiving surface for receiving waste and an inner edge formed above the waste receiving surface; a drain bend pipe connected to the lower part of the basin and discharging waste; a jet nozzle disposed below the basin, discharging cleaning water into the inlet of the drain bend pipe; a cleaning water supply device supplying cleaning water to the jet nozzle; a detection unit for detecting objects falling into the basin; and a control unit for determining, based on the detection result of the detection unit, that the object is... The system determines whether the object is solid or floating, and controls the cleaning water supply device based on this determination. The control unit is configured to control the cleaning water supply device by first jetting water from the jet nozzle at a first flow rate to generate a siphon effect, and then by second jetting water at a second flow rate less than the first flow rate. Furthermore, when the object is determined to be floating, the control unit controls the cleaning water supply device by making the second jetting water discharge time longer than when the object is determined to be solid.

[0020] In this invention, the control unit is configured to control the water supply device by first jetting water at a first flow rate to generate a siphon effect from the jet nozzle, and then second jetting water at a second flow rate less than the first flow rate. Therefore, the first jetting water quickly generates a siphon effect, and the second jetting water effectively flushes away waste. Furthermore, since the control unit is configured to control the water supply device in the second jetting water when the target object is determined to be floating waste, the second jetting water is controlled to have a longer jetting time than when the target object is determined to be solid waste. Therefore, the second jetting water reliably flushes away floating waste trapped in the drain bend. Thus, by performing appropriate toilet cleaning each time, water conservation can be further achieved while maintaining waste removal performance.

[0021] According to the flushing toilet device of the present invention, by properly cleaning the toilet during each flush, it is possible to achieve further water conservation while maintaining the performance of waste discharge. Attached Figure Description

[0022] Figure 1 This is a perspective view of a flushing toilet device according to an embodiment of the present invention. Figure 2 This is an overall structural diagram of the flushing toilet device according to an embodiment of the present invention. Figure 3 This is a block diagram showing the structure related to the control section of the flushing toilet device according to an embodiment of the present invention. Figure 4This is a flowchart illustrating the toilet cleaning control of a flushing toilet device according to an embodiment of the present invention. Figure 5 This is a diagram showing the cleaning sequence of water jets in each jet pattern of the flushing toilet device according to an embodiment of the present invention. Figure 6 This is a schematic diagram illustrating the discharge of waste and other substances in each jet water pattern of the flushing toilet device according to an embodiment of the present invention. Symbol Explanation 1-Flushing toilet device; 10-Pressure pump (cleaning water supply device); 12-Sewage receiving surface; 14-Inner edge; 15-Basin; 16-Drainage bend pipe; 20a-Inner edge water outlet; 24a-Jet water outlet; 68-Seat sensor; 70-Line sensor (detection unit); 74-Control unit; 76-Toilet cleaning switch; X-Floating sewage retained in the drain bend pipe. Detailed Implementation

[0023] Hereinafter, the flushing toilet device according to the embodiments of the present invention will be described with reference to the accompanying drawings. First, according to Figures 1 to 3 The overall structure of the flushing toilet device according to the embodiments of the present invention will be described. Figure 1 This is a perspective view of a flushing toilet device according to an embodiment of the present invention. Figure 2 This is an overall structural diagram of the flushing toilet device according to an embodiment of the present invention. Figure 3 This is a block diagram showing the structure related to the control section of the flushing toilet device according to an embodiment of the present invention.

[0024] like Figure 1 and Figure 2 As shown, the flushing toilet device 1 according to the embodiment of the present invention is a siphon jet type toilet, comprising: a ceramic toilet body 2; a partial washing device 4 disposed on the top of the toilet body 2; a valve unit 6 for supplying washing water to the toilet body 2; a water storage tank 8 for storing the washing water; and a pressure pump 10 for supplying the washing water stored in the water storage tank 8 to the toilet body 2.

[0025] The toilet body 2 includes: a basin 15 with a basin-shaped waste-receiving surface 12 and an inner edge 14 formed above the waste-receiving surface 12; and a drain bend pipe 16 connected to the bottom below the basin 15 and discharging waste. An inner edge water guide 18 is formed inside the inner edge 14, and an inner edge water discharge port 20 is formed at the downstream end of the inner edge water guide 18, i.e., the inner edge water discharge section 20. When viewed from the front, the inner edge water discharge port 20a is located on the right front of the basin 15, discharging cleaning water backward and creating a swirling flow along the inner circumference of the inner edge 14.

[0026] Additionally, a jet water guide passage 22 is formed below the toilet body 2, and a jet water discharge port 24a is formed at the downstream end of the jet water guide passage 22, i.e., the jet water discharge section 24. The jet water discharge port 24a is located at the bottom of the basin 15, is positioned approximately horizontally toward the inlet 16a of the drain bend pipe 16, and discharges cleaning water into the inlet 16a of the drain bend pipe 16.

[0027] The drainage bend pipe 16 consists of an inlet 16a, an ascending pipe 16b rising from the inlet 16a, and a descending pipe 16c descending from the ascending pipe 16b. The area between the ascending pipe 16b and the descending pipe 16c forms a top 16d. A drain connector 26 is connected to the lower end of the descending pipe 16c of the drainage bend pipe 16.

[0028] like Figure 1 As shown, the partial cleaning device 4 includes: a main body 4a; a cleaning nozzle 4b configured to move in and out of the main body 4a; a toilet seat 4c rotatably mounted on the main body 4a; and a toilet cover 4d rotatably mounted on the main body 4a to cover the toilet seat 4c.

[0029] like Figure 2 As shown, valve unit 6 has a main water supply line 30 that supplies cleaning water from the water source, namely the tap water pipe 28. On this main water supply line 30, a constant flow valve 38, a diaphragm-type solenoid valve 40, and a water supply line switching valve 42 are respectively installed from the upstream side. Furthermore, on the main water supply line 30 upstream of valve unit 6, a stop valve 32, a filter 34, and a branch fitting 36 are respectively installed from the upstream side. The main water supply line 30 is formed by a water supply hose connected to the tap water pipe 28 outside the toilet bowl.

[0030] Additionally, downstream of the water supply switching valve 42 are connected an inner edge water supply line 44 for supplying cleaning water to the inner edge outlet 20a; and a water tank side water supply line 46 for supplying cleaning water to the water storage tank 8. Downstream of the inner edge water supply line 44 is an inner edge water guide line 18, which uses the water pressure from the tap water pipe to supply cleaning water to the inner edge outlet 20a.

[0031] The constant flow valve 38 is used to limit the flow of cleaning water flowing in through the stop valve 32, filter 34, and branch fitting 36 to below a specified flow rate. In addition, the cleaning water flowing through the constant flow valve 38 flows into the solenoid valve 40, and the cleaning water flowing through the solenoid valve 40 is supplied from the inner edge side, i.e., the inner edge side water supply line 44, to the inner edge outlet 20a, or from the water tank side, i.e., the water tank side water supply line 46, to the water storage tank 8 via the water supply line switching valve 42.

[0032] The water supply switching valve 42 is a switching valve that can simultaneously supply cleaning water to both the inner edge side water supply line 44 and the water tank side water supply line 46, and can arbitrarily change the water supply volume and flow rate ratio to the inner edge side and the water tank side. The water supply switching valve 42 has a rotor (not shown) for changing the water supply volume and flow rate ratio to the inner edge side and the water tank side, which is driven to the desired position by a motor (not shown).

[0033] A pump-side water supply line 48 is connected to the lower part of the water storage tank 8, and a booster pump 10 with a pump chamber is connected to the downstream end of the pump-side water supply line 48. Moreover, the booster pump 10 and the jet guide water line 22 are connected by the jet-side water supply line 50, and the booster pump 10 pressurizes the cleaning water stored in the water storage tank 8 and supplies it to the jet outlet 24a.

[0034] The booster pump 10 is configured to pressurize the cleaning water stored in the water tank 8 and discharge it from the jet outlet 24a at a predetermined flow rate. The upstream side of the booster pump 10 is connected to the pump-side water supply line 48, and the downstream side is connected to the jet-side water supply line 50. The booster pump 10 includes: a housing 10a; blades, i.e., an impeller 10b, which is configured to rotate bidirectionally in both forward and reverse directions within the housing; and a motor 10c that drives the impeller 10b. The booster pump 10 is a centrifugal pump that uses the centrifugal force generated by the rotation of the impeller 10b to pressurize and transport the cleaning water in the water tank 8. Furthermore, the booster pump 10 is an example of the "cleaning water supply device" in this invention. Although a booster pump is used as a cleaning water supply device in this embodiment, a water-energy-storing booster or a pneumatic compressor powered by compressed air can also be used instead of a booster pump. In addition, the aforementioned water supply switching valve or an electromagnetic on / off valve that can change the cross-sectional area of ​​the flow path can also be used as a cleaning water supply device.

[0035] A check valve, also known as a vacuum breaker 52, is installed on the inner edge water supply line 44, and a check valve, also known as a vacuum breaker 54, is installed on the water tank side water supply line 46. These vacuum breaker mechanisms prevent backflow from the inner edge outlet 20a or the water storage tank 8. Furthermore, cleaning water overflowing from the atmospheric opening of the vacuum breaker 52 in the inner edge water supply line 44 flows through the return pipe 55 and into the water storage tank 8.

[0036] The water storage tank 8 is a closed water storage tank. A ball check valve 56 is installed at the connection between the water supply line 46 and the water storage tank 8 on the tank side, and a ball check valve 58 is also installed at the connection between the return line 55 and the water storage tank 8. These ball check valves prevent backflow of cleaning water even if the water storage tank 8 is full of water above the upper end of the overflow path.

[0037] A drain plug 62 is provided at the bottom of the water storage tank 8. The drain plug 62 is located closer to the bottom than the booster pump 10. During maintenance, the cleaning water in the water storage tank 8 and the booster pump 10 can be drained by opening the drain plug 62.

[0038] An upper float switch 64 and a lower float switch 66 are installed inside the water storage tank 8. When the water level in the water storage tank 8 reaches a predetermined position L2 that is slightly lower than the highest water level L3 during normal use, the upper float switch 64 is switched to the on state, and the control unit 74 detects this state and closes the solenoid valve 40. When the water level in the water storage tank 8 drops to the lowest water level L1 during normal use, the lower float switch 66 is switched to the on state, and the control unit 74 detects this state and stops the booster pump 10.

[0039] In addition, an overflow passage 60 is provided inside the water storage tank 8 for discharging overflowing cleaning water. The upper end of the overflow passage 60 is open inside the water storage tank 8, and its lower end is connected to the spray side water supply passage 50. A check valve, i.e., a baffle valve 67, is installed on the overflow passage 60 to prevent backflow from the spray nozzle 24a.

[0040] like Figure 1 and Figure 2 As shown, the flushing toilet device 1 includes: a seating sensor 68 for detecting the user's sitting action; a line sensor 70 for detecting objects that fall into the basin 15 after the user defecates; and a control unit 74 for controlling the pressure pump 10 based on the detection results detected by the line sensor 70.

[0041] The seating sensor 68 is located on the back of the toilet seat 4c on the left rear side of the partial washing device 4. The seating sensor 68 is a load sensor that detects the user's load. The seating sensor 68 is configured to detect changes in load when the user is seated on the toilet seat 4c, and to detect the start and end of the user's urination / defecation. Furthermore, although a load sensor is used as the seating sensor 68 in this embodiment, an infrared range sensor or the like can also be used instead of a load sensor.

[0042] A line sensor 70 is positioned within the body 4a of the local cleaning device 4, facing the basin 15, to detect objects falling into the basin 15. The line sensor 70 consists of multiple light-receiving elements arranged in a straight line, configured to acquire one-dimensional data (a linear still image) at predetermined time intervals. The control unit 74 arranges the acquired one-dimensional data in a time sequence to generate a two-dimensional image, which is used to determine the type and quantity of the object. Furthermore, the line sensor 70 is an example of the "detection unit" in this invention. Although a line sensor is used as the detection unit in this embodiment, it can also be replaced by a camera that captures images of objects falling into the basin 15 or an ultrasonic ranging sensor that measures the height of the water surface using ultrasonic waves. In addition, although the line sensor 70 is provided in the main body 4a of the partial washing device 4 in this embodiment, it can also be provided on the back of the toilet seat 4c or the toilet lid 4d.

[0043] like Figure 3 As shown, the control unit 74 is electrically connected to the upper float switch 64, the lower float switch 66, the seating sensor 68, the line sensor 70, the toilet cleaning switch 76, the solenoid valve 40, the water supply switching valve 42, and the booster pump 10, thus enabling communication with various devices. The control unit 74 is configured such that when the toilet cleaning switch 76 is pressed, the solenoid valve 40, the water supply switching valve 42, and the booster pump 10 are activated sequentially. This causes cleaning water to first be discharged from the inner edge outlet 20a, then from the jet outlet 24a while cleaning water is being discharged from the inner edge outlet 20a, and finally from the inner edge outlet 20a. Furthermore, in this embodiment, although the control unit 74 is wired to various devices, it can also be wirelessly connected.

[0044] The control unit 74 is configured to generate a two-dimensional image by arranging multiple one-dimensional data acquired from the linear sensor 70 in a time sequence, and to determine the type and quantity of objects falling into the basin 15. Furthermore, the control unit 74 is configured to control the pressure pump 10 and change the instantaneous flow rate and discharge time of the cleaning water discharged from the jet nozzle 24a each time the toilet is cleaned, based on the determination of the type and quantity of objects falling into the basin 15.

[0045] Next, the control of toilet cleaning in the flushing toilet device 1 according to the embodiments of the present invention will be described in detail. Figure 4 This is a flowchart illustrating the toilet cleaning control of a flushing toilet device according to an embodiment of the present invention. Furthermore, Figure 4 In this context, S represents each step.

[0046] First, in S1, it is determined whether the user is seated on the toilet seat 4c. Specifically, when the control unit 74 detects a signal from the seating sensor 68, it determines that the user is seated on the toilet seat 4c and proceeds to S2 (S1; Yes). Conversely, when the control unit 74 does not detect a signal from the seating sensor 68, it determines that the user is not seated on the toilet seat 4c (S1; No).

[0047] Next, in S2, the object falling into the basin 15 is detected. Specifically, after the user urinates, the object falling into the basin 15 is detected by the line sensor 70. The line sensor 70 acquires one-dimensional data (a still image of a line) of the object at predetermined time intervals. The acquired one-dimensional data is sent to the control unit 74, which arranges multiple data in a time sequence to generate a two-dimensional image.

[0048] Furthermore, in S3, it is determined whether the user has finished urinating. Specifically, when a change in signal (change in seating state) is detected from the seating sensor, it is determined that the user has finished urinating, and proceeds to S4 (S3; Yes). Alternatively, when the control unit 74 does not detect a change in signal from the seating sensor, it is determined that the user has not finished urinating (S3; No).

[0049] Next, in S4, the type and quantity of the objects falling into the basin 15 are determined. Specifically, the control unit 74 compares the two-dimensional image generated in S2 with a standard image pre-stored in the control unit 74. Furthermore, in S4, it is determined whether the type of object falls under "solid waste," "floating waste," or "toilet paper (objects other than waste)." Also, in S4, it is determined whether the quantity of the object is "few," "standard," or "many." In addition, during the comparison between the two-dimensional image and the standard image, the brightness, hue, saturation, and color levels of each image are quantified, and the type and quantity of the object are determined by comparing these values. Furthermore, when "solid waste," "floating waste," and "toilet paper" are mixed together, the control unit 74 determines the type of object as the object with the highest quantity.

[0050] Furthermore, in S5, when the user presses the toilet cleaning switch 76 to start the toilet cleaning operation, the toilet cleaning is performed (S6).

[0051] Next, in S6, the control unit 74 controls the solenoid valve 40, the water supply switching valve 42, and the pressurization pump 10 to start toilet cleaning. First, the control unit 74 opens the solenoid on / off valve 40 and simultaneously fully opens the water supply switching valve 42 to the inner edge side. As a result, cleaning water is discharged from the inner edge outlet 20a, and the basin 15 is cleaned.

[0052] Next, while water is continuously being discharged from the inner edge outlet 20a, the control unit 74 drives the pressurization pump 10 to discharge cleaning water from the jet outlet 24a. Specifically, the control unit 74 controls the pressurization pump 10 to perform a first jet discharge at a first flow rate to generate a siphon effect, and then performs a second jet discharge at a second flow rate less than the first flow rate. At this time, the control unit 74 selects one of the nine jet discharge modes described later, based on the type and quantity of the object determined in S4 above, and controls the pressurization pump 10 accordingly. Thus, cleaning water is discharged from the jet outlet 24a according to the selected jet discharge mode.

[0053] Furthermore, the control unit 74 stops the pressurization pump 10 and stops the water discharge from the jet nozzle 24a. After the pressurization pump 10 has been stopped, cleaning water continues to be discharged from the inner edge nozzle 20a, so the water in the basin 15 returns to its original state, and the toilet cleaning ends (S7).

[0054] Next, refer to Figure 5 and Figure 6 The jetting water pattern is described in detail as it changes according to the type and quantity of the object. Figure 5 This diagram illustrates the flushing sequence of water jets in each jet pattern of the flushing toilet device according to an embodiment of the present invention. Figure 6 This is a schematic diagram illustrating the discharge of waste and other contaminants in various jet spray modes of the flushing toilet device according to an embodiment of the present invention. Furthermore, Figure 5 The diagram illustrates the cleaning sequence from the start to the end of the cleaning process, beginning with the ejection of cleaning water from the jet nozzles. Additionally, Figure 6 In the diagram, column (a) shows the situation where waste and other substances are discharged by the first jet of water, and column (b) shows the situation where waste and other substances are discharged by the second jet of water.

[0055] like Figure 5 As shown, the water jetting patterns are divided into nine types (patterns A1-A3, B1-B3, and C1-C3) based on the type and quantity of the object. The types of objects are categorized into three types: "solid waste," "floating waste," and "toilet paper." Here, "solid waste" refers to waste with a specific gravity greater than water that sinks; "floating waste" refers to waste with a specific gravity less than water that floats in water (diarrhea stool); and "toilet paper" refers to water-soluble paper used after excretion. Furthermore, the quantity of the object is categorized into three types: "small," "standard," and "large." Here, "small" refers to a quantity less than approximately 100g, "standard" refers to a quantity between approximately 100 and 300g, and "large" refers to a quantity more than approximately 300g. Furthermore, although this embodiment divides the water jetting pattern into 9 types, it is not limited to this. For example, the water jetting pattern can be divided into fewer than 9 types, or it can be divided into more than 9 types. In addition, although this embodiment divides the types of objects into "solid waste", "floating waste" and "toilet paper", it can also be divided into "solid waste", "floating waste" and "objects other than waste".

[0056] In each jet discharge mode, a first jet discharge is performed at a first flow rate used to generate a siphon effect, followed by a second jet discharge at a second flow rate less than the first flow rate. Thus, through the first jet discharge, the drain bend pipe 16 quickly fills with water, creating a siphon effect. Through this siphon effect, dirt and other contaminants are discharged outside the drain bend pipe 16. Then, when the siphon effect ends or is about to end, a second jet discharge (purge flow) flushes the remaining contaminants and the return water from the drain bend pipe 16 outside the drain bend pipe 16.

[0057] First, when the type of object is determined to be "solid waste", select and execute any one of modes A1 to A3 according to the amount of solid waste.

[0058] like Figure 5 As shown, in the case of "solid contaminants", the instantaneous flow rate of the cleaning water discharged from the jet nozzle 24a is the same in modes A1 to A3, with the instantaneous flow rate of the first jet being 50 L / min and the instantaneous flow rate of the second jet being 35 L / min.

[0059] like Figure 5 As shown, in the case of "solid contaminants," the discharge time of the first jet is set to be longer the greater the amount of solid contaminants. Specifically, the discharge time of the first jet is 0.5 seconds when the amount of solid contaminants is "small," 0.6 seconds when it is "standard," and 0.7 seconds when it is "large." Furthermore, the discharge time of the second jet is set to be approximately constant (0.7 seconds) regardless of the amount of solid contaminants. Additionally, the volume of cleaning water discharged from the jet nozzle 24a is 2.63L when the amount of solid contaminants is "small," 2.80L when it is "standard," and 2.96L when it is "large."

[0060] like Figure 6 As shown in column (a), in the case of "solid waste," the instantaneous flow rate of the first jet of water is set to a relatively large flow rate, so the drain bend 16 quickly fills with water, creating a siphon effect. Furthermore, the discharge time of the first jet of water is set to be longer the greater the amount of solid waste, thus the duration of the siphon effect also increases with the amount of solid waste. Therefore, even with a large amount of solid waste, the first jet of water can reliably discharge the solid waste.

[0061] like Figure 6 As shown in column (b), in the case of "solid contaminants," the instantaneous flow rate of the second jet is set to a relatively small flow rate. Therefore, with reduced cleaning water volume, the second jet flushes away residual contaminants and backflow water from the drain bend 16. Furthermore, the discharge time of the second jet is set to remain approximately constant regardless of the amount of solid contaminants, thus reducing the cleaning water volume. Here, even if the amount of solid contaminants increases, almost all of them can be discharged by the first jet, so even with a relatively constant discharge time for the second jet, the solid contaminant discharge performance does not decrease.

[0062] Next, when the type of object is determined to be "floating debris", select and execute any one of modes B1 to B3 according to the amount of floating debris.

[0063] like Figure 5 As shown, in the case of "floating debris," the instantaneous flow rate of the cleaning water discharged from the jet nozzle 24a is the same in modes B1 to B3, with the instantaneous flow rate of the first jet being 56 L / min and the instantaneous flow rate of the second jet being 40 L / min. Thus, in the case of "floating debris," the instantaneous flow rate of the first jet is set to be greater than that in the case of "solid debris" (modes A1 to A3). Similarly, the instantaneous flow rate of the second jet is set to be greater than that in the case of "solid debris" (modes A1 to A3).

[0064] like Figure 5 As shown, in the case of "floating debris," the water discharge time of the first jet is set to be approximately constant (0.4 seconds) regardless of the amount of floating debris. Thus, in the case of "floating debris," the water discharge time of the first jet is set shorter than that in the case of "solid debris" (modes A1 to A3). Furthermore, the water discharge time of the second jet is set to be longer the greater the amount of floating debris. Specifically, the water discharge time of the second jet is 0.7 seconds when the amount of floating debris is "small," 0.8 seconds when it is "standard," and 1.2 seconds when it is "large." Thus, in the case of "floating debris," the water discharge time of the second jet is set to be the same as or longer than that in the case of "solid debris" (modes A1 to A3). In addition, the amount of cleaning water discharged from the jet nozzle 24a is 2.81L when the amount of floating debris is "small", 2.94L when it is "standard", and 3.14L when it is "large".

[0065] like Figure 6As shown in column (a), in the case of "floating debris," the instantaneous flow rate of the first jet is set to be greater than that in the case of "solid debris," thus causing the drain bend pipe 16 to fill with water more quickly and creating a siphon effect. Furthermore, the discharge time of the first jet is set to be shorter than that in the case of "solid debris," regardless of the amount of floating debris, and is approximately constant, thus reducing the amount of cleaning water required. Here, even if the amount of floating debris increases, if a siphon effect can be quickly generated, the floating debris remaining in the drain bend pipe 16 can be discharged (see reference). Figure 6 Most of the floating debris is excluding the X portion of (a). Therefore, even if the discharge time of the first jet is shorter than that of "solid debris" and is approximately constant, the discharge performance of floating debris will not decrease.

[0066] like Figure 6 As shown in column (b), in the case of "floating debris", the instantaneous flow rate of the second jet is set to be greater than that of "solid debris", thus flushing away the floating debris retained in the drain bend pipe 16 by the second jet (see reference). Figure 6 (a) X portion) and return water from the drain bend pipe 16. Furthermore, the discharge time of the second jet is set to be longer the greater the amount of floating debris, thus the time required to flush away floating debris retained in the drain bend pipe 16 is also longer the greater the amount of floating debris. Therefore, even when the amount of floating debris is large, the second jet can reliably discharge the retained floating debris.

[0067] Next, when the type of object is determined to be "toilet paper", select and execute any one of modes C1 to C3 according to the amount of floating waste.

[0068] like Figure 5 As shown, in the case of "toilet paper," the instantaneous flow rate of the cleaning water ejected from the jet nozzle 24a is the same in modes C1 to C3, with the instantaneous flow rate of the first jet being 56 L / min and the instantaneous flow rate of the second jet being 35 L / min. Thus, in the case of "toilet paper," the instantaneous flow rate of the first jet is set to be greater than that when "solid waste" is being ejected (modes A1 to A3). Conversely, the instantaneous flow rate of the second jet is set to be less than that when "floating waste" is being ejected (modes B1 to B3).

[0069] like Figure 5As shown, in the case of "toilet paper," the dispensing time of the first jet is set to be approximately constant (0.4 seconds) regardless of the amount of toilet paper. Thus, in the case of "toilet paper," the dispensing time of the first jet is set shorter than when using "solid waste" (modes A1-A3). Furthermore, the dispensing time of the second jet is set to be longer the more toilet paper is dispensed. Specifically, the dispensing time of the second jet is 0.1 seconds when the amount of toilet paper is "small," 0.2 seconds when it is "standard," and 0.4 seconds when it is "large." Thus, in the case of "toilet paper," the dispensing time of the second jet is set shorter than when using "solid waste" (modes A1-A3) and "floating waste" (modes B1-B3). In addition, the amount of cleaning water discharged from the spray nozzle 24a is 2.40L when the amount of toilet paper is "small", 2.46L when it is "standard", and 2.58L when it is "large".

[0070] like Figure 6 As shown in column (a), in the case of "toilet paper," the instantaneous flow rate of the first jet of water is set to be greater than that in the case of "solid waste," thus causing the drain bend pipe 16 to fill with water more quickly and generate a siphon effect. Furthermore, the discharge time of the first jet of water is set to be shorter than that in the case of "solid waste," regardless of the amount of toilet paper, and is approximately constant, thus reducing the amount of washing water required. Here, even if the amount of toilet paper increases, if a siphon effect can be generated quickly, the drain bend pipe 16 remains full of water due to the toilet paper, and therefore the toilet paper can be discharged. Therefore, even if the discharge time of the first jet of water is shorter than that in the case of "solid waste," and is approximately constant, the toilet paper discharge performance does not decrease.

[0071] like Figure 6 As shown in column (b), in the case of "toilet paper," the instantaneous flow rate of the second jet is set to be less than that in the case of "floating debris." Therefore, with a reduced water volume, the second jet flushes away residual toilet paper and backflow water from the drain bend 16. Furthermore, the jetting time of the second jet is set to be longer the more toilet paper there is, thus increasing the time required to flush away residual toilet paper in the drain bend 16. Therefore, even with a large amount of toilet paper, the second jet ensures that residual toilet paper is reliably removed.

[0072] Next, the effects of the flushing toilet device 1 according to the above-described embodiments of the present invention will be explained. Firstly, in the flushing toilet device 1 according to the embodiment of the present invention, since the control unit 74 is configured to control the booster pump 10 (cleaning water supply device) to spray water from the spray nozzle 24a at a first flow rate for generating a siphon effect, and then spray water at a second flow rate less than the first flow rate, a siphon effect can be quickly generated by the first spray, and then the waste can be flushed away by the second spray. Furthermore, since the control unit 74 is configured to control the booster pump 10 in the first spray when the object is determined to be floating waste, so that the spray time is shorter than when the object is determined to be solid waste, the spray time of the first spray, which has a smaller impact on the discharge of floating waste, can be shortened, thereby reducing the amount of cleaning water. Therefore, by properly cleaning the toilet each time, further water conservation can be achieved while maintaining waste discharge performance.

[0073] Furthermore, in the flushing toilet device 1 according to the embodiment of the present invention, since the control unit 74 is configured such that when the object is determined to be floating debris, the pressure pump 10 (cleaning water supply device) is controlled to keep the water discharge time approximately constant regardless of the amount of object in the first jet of water, the water discharge time of the first jet of water, which has a relatively small impact on the discharge of floating debris, can be kept approximately constant, thereby reducing the amount of cleaning water.

[0074] In the flushing toilet device 1 according to the embodiment of the present invention, since the control unit 74 is configured to control the pressure pump 10 (cleaning water supply device) in a manner that the more object it is determined to be, the longer the water jetting time is, when the second jetting water is sprayed. Therefore, when there is a large amount of floating object, the floating object stuck in the drain bend pipe 16 can be reliably flushed away by the second jetting water.

[0075] Furthermore, in the flushing toilet device 1 according to the embodiment of the present invention, since the control unit 74 is configured to control the pressure pump 10 (cleaning water supply device) in the first jet of water when it is determined that the object is solid waste, the more the object is, the longer the water jetting time is, so the duration of the siphoning action can be extended and solid waste can be reliably discharged.

[0076] In the flushing toilet device 1 according to the embodiment of the present invention, since the control unit 74 is configured to control the pressure pump 10 (cleaning water supply device) in a manner that keeps the water ejection time approximately constant regardless of the amount of the object when the object is determined to be solid waste, the water ejection time of the second jet water ejection, which has a relatively small impact on the discharge of solid waste, can be kept approximately constant, thereby reducing the amount of cleaning water.

[0077] Furthermore, in the flushing toilet device 1 according to the embodiment of the present invention, since the control unit 74 is configured to control the pressure pump 10 (cleaning water supply device) in a manner that makes the water ejection time shorter than when the object is solid waste or floating waste during the second jet water ejection, the water ejection time of the second jet water ejection, which has a smaller impact on the discharge of toilet paper, can be shortened, thereby reducing the amount of cleaning water.

[0078] In the flushing toilet device 1 according to the embodiment of the present invention, since the control unit 74 is configured to control the pressure pump 10 (cleaning water supply device) in the first jet of water to make the instantaneous flow rate larger than that when the object is determined to be solid waste when it is determined to be floating ...

[0079] Furthermore, in the flushing toilet device 1 according to the embodiment of the present invention, since the control unit 74 is configured to control the pressure pump 10 (cleaning water supply device) in a way that the instantaneous flow rate is greater than that when the object is determined to be solid waste when the second jet of water is ejected, the floating waste retained in the drain bend pipe 16 can be reliably flushed away by the second jet of water.

[0080] In the flushing toilet device 1 according to the embodiment of the present invention, since the control unit 74 is configured to control the pressure pump 10 (cleaning water supply device) in the second jet water discharge in such a way that the instantaneous flow rate is smaller than when the object is determined to be floating waste, the instantaneous flow rate of the second jet water discharge, which has a smaller impact on the discharge of toilet paper, can be reduced, thereby reducing the amount of cleaning water.

[0081] Furthermore, in the flushing toilet device 1 according to the embodiment of the present invention, since the control unit 74 is configured to control the pressure pump 10 (cleaning water supply device) in a manner that makes the flushing time longer than when the object is determined to be solid waste during the second jet of water discharge, the floating waste retained in the drain bend pipe 16 can be reliably flushed away by the second jet of water discharge.

[0082] The invention is not limited to the embodiments described above, and various modifications and variations can be made within the scope of the technical concept described in the claims. In particular, the values ​​of instantaneous flow rate, water discharge time, and cleaning water volume described above are not limited to these, and various modifications can be made within the scope of the technical concept described in the claims.

Claims

1. A flushing toilet device, which is a siphon jet type flushing toilet device. It has: a basin, a waste receiving surface for receiving waste, and an inner edge formed above the waste receiving surface; The drain bend is connected below the basin and discharges waste. A spray nozzle is located below the basin to spray cleaning water into the inlet of the drain bend. A cleaning water supply device supplies cleaning water to the spray nozzle; The detection unit detects objects that fall into the basin. The control unit, based on the detection results of the detection unit, determines whether the object is solid or floating debris, and controls the cleaning water supply device according to the determination result. Its characteristic is that... The control unit is configured to control the cleaning water supply device by first jetting water from the jet outlet at a first flow rate to generate a siphon effect, and then jetting water a second time at a second flow rate less than the first flow rate. The control unit is configured to control the cleaning water supply device in such a way that when the object is determined to be floating debris, the water discharge time in the first jet is shorter than when the object is determined to be solid debris.

2. The flushing toilet device according to claim 1, characterized in that, The control unit is configured to determine the quantity of the object based on the detection result of the detection unit, and control the cleaning water supply device based on the determination result. The control unit is configured such that, when the object is determined to be floating debris, the water supply device is controlled in the first jet of water in such a way that the water jetting time is approximately constant regardless of the amount of the object.

3. The flushing toilet device according to claim 2, characterized in that, The control unit is configured such that, when the object is determined to be floating debris, the second jet of water is controlled to extend the water supply time by increasing the amount of the object.

4. The flushing toilet device according to any one of claims 1 to 3, characterized in that, The control unit is configured to determine the quantity of the object based on the detection result of the detection unit, and control the cleaning water supply device based on the determination result. The control unit is configured such that, when the object is determined to be solid dirt, the water supply device is controlled in the first jet of water in such a way that the greater the amount of the object, the longer the water jetting time.

5. The flushing toilet device according to claim 4, characterized in that, The control unit is configured to control the cleaning water supply device in a manner that, when the object is determined to be solid dirt, the water jetting time is kept approximately constant regardless of the amount of the object.

6. The flushing toilet device according to claim 1, characterized in that, The control unit is configured to determine, based on the detection result of the detection unit, whether the object is solid dirt, floating dirt, or an object other than dirt, and control the cleaning water supply device according to the determination result. The control unit is configured to control the cleaning water supply device in such a way that when the object is determined to be an object other than dirt, the second jet of water is sprayed in a manner that the spraying time is shorter than when the object is solid dirt or floating dirt.

7. A flushing toilet device, which is a siphon jet type flushing toilet device. It has: a basin, a waste receiving surface for receiving waste, and an inner edge formed above the waste receiving surface; The drain bend is connected below the basin and discharges waste. A spray nozzle is located below the basin to spray cleaning water into the inlet of the drain bend. A cleaning water supply device supplies cleaning water to the spray nozzle; The detection unit detects objects that fall into the basin. The control unit, based on the detection results of the detection unit, determines whether the object is solid or floating debris, and controls the cleaning water supply device according to the determination result. Its characteristic is that... The control unit is configured to control the cleaning water supply device by first jetting water from the jet outlet at a first flow rate to generate a siphon effect, and then jetting water a second time at a second flow rate less than the first flow rate. The control unit is configured to control the cleaning water supply device in a manner that, when the object is determined to be floating debris, the instantaneous flow rate in the first jet of water is greater than the instantaneous flow rate when the object is determined to be solid debris.

8. The flushing toilet device according to claim 7, characterized in that, The control unit is configured to control the cleaning water supply device in a manner that, when the object is determined to be floating debris, the instantaneous flow rate in the second jet of water is greater than the instantaneous flow rate when the object is determined to be solid debris.

9. The flushing toilet device according to claim 8, characterized in that, The control unit is configured to determine, based on the detection result of the detection unit, whether the object is solid dirt, floating dirt, or an object other than dirt, and control the cleaning water supply device according to the determination result. The control unit is configured to control the cleaning water supply device in a manner that, when the object is determined to be an object other than dirt, the instantaneous flow rate in the second jet of water is smaller than the instantaneous flow rate when the object is determined to be floating dirt.

10. A flushing toilet device, which is a siphon-jet type flushing toilet device. It has: a basin, a waste receiving surface for receiving waste, and an inner edge formed above the waste receiving surface; The drain bend is connected below the basin and discharges waste. A spray nozzle is located below the basin to spray cleaning water into the inlet of the drain bend. A cleaning water supply device supplies cleaning water to the spray nozzle; The detection unit detects objects that fall into the basin. The control unit, based on the detection results of the detection unit, determines whether the object is solid or floating debris, and controls the cleaning water supply device according to the determination result. Its characteristic is that... The control unit is configured to control the cleaning water supply device by first jetting water from the jet outlet at a first flow rate to generate a siphon effect, and then jetting water a second time at a second flow rate less than the first flow rate. The control unit is configured to control the cleaning water supply device in such a way that when the object is determined to be floating debris, the second jet of water is sprayed with a longer spraying time compared to when the object is determined to be solid debris.

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